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American Journal of Orthodontics and Dentofacial Orthopedics Kinzinger et al 585 Volume 136, Number 4 by 1.87 6 0.74 mm. In the subsequent active distalization of the anterior dentition, the molars can be anchored to the miniscrews. Various studies, in which different intraoral appliances with conventional anchorage designs (acrylic button and 2-4 anchorage teeth) were used for molar distalization, give the share of molar distalization in the total movement as 35% to 81.3% (Table V). 8,31-55 The miniscrew-supported periodontal anchorage of the skeletonized distal jet used in this study, on the other hand, allows greater molar distalization in the total movement—91.71% and 86.56%; this is a reason that this innovative anchorage design makes sense as a treatment alternative. CONCLUSIONS In the sagittal dimension, the miniscrew-supported distal jet appliance allows almost translatory molar distalization. Because of the palatal force application from the center of resistance of the molars, the teeth experience therapeutically undesired mesial inward and distal outward rotation. The incorporation into the anchorage setup of 2 miniscrews at paramedian locations has the following advantages compared with conventional anchorage designs: by dispensing with an acrylic button that covers the palate, hygiene of the palatal mucosa improves. Additional dental anchorage requires only 2 teeth. The second premolars, which are not part of the anchorage, can drift distally spontaneously under the pulling effect of the transseptal fibers. Although a miniscrew-supported periodontal anchorage of a skeletonized distal jet appliance does not offer stationary anchorage quality, it allows a greater percentage of molar distalization in the total movement than do conventional anchorage designs with an acrylic palatal button. REFERENCES 1. Carano A, Testa M. The distal jet for upper molar distalization. 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